Unit 4 Exercise Homeostasis Lab: The Effects of Exercise on Homeostasis

Question

Click here for a recording that goes over this portfolio.

Click here for a recording on how to put your data into a graph.

Click here for some general homeostasis information.

IMPORTANT: If you have a medical condition that might make exercising for 4 minutes dangerous to your health, please do not do this lab yourself. Please have a family member or friend do the exercising instead and then you can record the results and complete the remainder of the lab.

There are 5 parts for this lab.
Write a hypothesis.
Follow the procedures to gather your data.
Fill out the data table.
Create a graph of your data table.
Answer the 5 conclusion questions.

How to complete the Exercise Homeostasis Lab: The Effects of Exercise on Homeostasis

**Make a COPY of this lab sheet. To do this, go to file and choose make a copy.
***Be sure to change your share settings. Click on the blue button in the upper right corner, and change to “anyone on the internet with this link can view”

Purpose:
To discover the effect that homeostasis has on the variables, perspiration level, body temperature, heart rate, and breathing rate during exercise.

Hypothesis:
Write one hypothesis describing how you predict the 4 variables below will change as you exercise.
Perspiration level
Body temperature
Heart rate
Breathing rate

Complete this hypothesis statement:
If__cloud____________________(name of student exercising) exercises for several minutes,
then we will expect__her to be tired_____________________________ because___her muscles are being strained________________________.

Procedure:

Materials: thermometer and stopwatch

Introduction:
Exercise causes many homeostatic factors to kick in, in an effort to maintain homeostasis. How exercise affects some of these homeostatic factors can be determined by measuring and observing certain variables.

For this lab, you will need a helper!! This person will help take your heart rate and temperature. You will skip or jog in place for a total of 4 minutes. The variables above will be recorded at rest, after 1 minute, after 2 minutes, after 3 minutes, after 4 minutes, and 10 minutes after all exercise has stopped. The subject should stop just long enough for the needed measurements to be taken. Record data in the table provided.

1.Obtain a thermometer and stopwatch
2. Record RESTING observations and values for each parameter, before you start exercising.
Record normal perspiration level (ie. none, mild, medium, high, etc) on a scale of 1 to 10. Normal 5
Record body temperature using the thermometer. 98 f
Determine breathing rate by counting # of breaths taken in 10 seconds and multiply by 6. 60
Determine heart rate by counting beats felt in 10 seconds and multiply by 6. You can also use a smartwatch or fitbit if it takes a pulse. 60
3. Start to skip or jog in place. Be sure to exercise at a level you think you can maintain for 4 total minutes.
4. Take your variable readings using the same technique above at the 1, 2, 3, and 4 minute mark. Have a helper write down the number of breaths and heart beats in 10 seconds so that you can continue exercising immediately after the 6 seconds. The helper could count the heart beat while you count the breaths.
5. Take final readings 10 minutes after you stop exercising.
6. Record the variable readings in table provided

3. RESULTS:Data Table
Record your results in the spreadsheet linked below, then you can easily put this data into a line graph (which is the next step).

Click here for the link to the data tableOnce you open this, Go to File> Make A Copy> Give it your own title and SAVE it somewhere in your Google drive where you can find it again! *You can use this Google sheet OR Excel sheet for your data.
Click here for the quick video on how to make a copy of the data table

Provide Link to your Completed Data Table Here:
Be sure to change your share settings!
Click on the blue button in the upper right corner, and change to “anyone on the internet with this link can view”
(if using Excel, you can add as an attachment in the Unit 4, Lesson 3 Drop Box)

4. Analysis & Graph
Use your spreadsheet to create a line graph of your results. There is a video at the top of this doc that explains how to do this for both Excel and Google Sheets.

***Remember to include a Title, label x and y axis, and include units.
Click here for instructions on how to put your data table into a graph

5. Conclusion Questions: You must use full sentences.
You may need to use your notes to answer some of these questions. Please change the color of your answers for easy grading!

1. Read your hypothesis. Do your results support your hypothesis? Please be specific and include the variables in your answer.

2. As you exercised, why was there a change in perspiration level? If it did not change, please still explain why humans perspire when hot.

3. Why does an increase in heart rate and breathing rate accompany exercise? Include how your circulatory and respiratory systems are working together to maintain homeostasis.

4. Study your measurements/variables after exercise has stopped. What conclusions can you make about your body’s ability to maintain homeostasis? Did it return to your pre-exercise resting state? Please include more than just yes or no in your answer.

5. Besides during exercising, what are other situations where your body would need to maintain homeostasis? Please review the general homeostasis information link at the top of this worksheet for help with this answer.

*Since this is a google doc, you can paste the link on word doc or notes and send it through the Drop Box.

Answer 1

Exercise Homeostasis Lab: The Effects of Exercise on Homeostasis

Hypothesis:

If [Student Name] exercises for several minutes, then we will expect [her to be tired] because [her muscles are being strained].

Procedure:

1. Materials: Thermometer, stopwatch, assistant (to help take readings).
2. Introduction: Exercise initiates various homeostatic mechanisms as the body strives to maintain equilibrium.
3. Resting Measurements:
   • Record normal perspiration level on a scale of 1 to 10: [5]
   • Measure body temperature: [98°F]
   • Count breathing rate for 10 seconds and multiply by 6: [60 breaths per minute]
   • Count heart rate for 10 seconds and multiply by 6: [60 beats per minute]
4. Exercise: Skip or jog in place for 4 minutes, taking notes at 1, 2, 3, and 4 minute marks and 10 minutes post-exercise.
5. Record Data: Use the linked spreadsheet to document your findings.

Results: Data Table

Link your completed data table here after recording all readings and ensuring share settings allow view access.

Analysis & Graph

Utilize spreadsheet software to create a line graph of the variable changes throughout the exercise and recovery periods, ensuring axes are clearly labeled, and you include a title.

Conclusion Questions:

1. Do your results support your hypothesis? Yes, my results support my hypothesis. As [Student Name] exercised, her perspiration level increased, body temperature rose, heart rate accelerated, and breathing rate elevated, indicating that the body was working to maintain homeostasis under physical exertion.

2. Why was there a change in perspiration level? There was an increase in perspiration level as exercise raises body temperature, prompting the body to cool itself through sweating. Sweating allows heat to dissipate, facilitating temperature regulation.

3. Why does heart rate and breathing rate increase during exercise? An increase in heart rate and breathing rate during exercise occurs to supply muscles with more oxygen-rich blood and remove carbon dioxide. The circulatory system pumps blood faster, while the respiratory system enhances oxygen intake, working together to maintain homeostasis.

4. What conclusions can you make about your body’s ability to maintain homeostasis? After exercise, my body gradually returned to pre-exercise resting states, indicating effective homeostatic responses. Although heart rate, breathing rate, and body temperature remained elevated initially, they gradually normalized post-exercise, showing the body’s ability to regulate itself efficiently.

5. What are other situations where your body would need to maintain homeostasis? Besides during exercise, the body needs to maintain homeostasis in situations like extreme temperatures (cold or heat), dehydration, illness, changes in environmental oxygen levels, and after eating (to balance blood sugar levels). Each of these scenarios requires adjustments from various organ systems to restore equilibrium.

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Feel free to fill in any specific data and refine language as needed, and remember to replace "[Student Name]" with the actual name of the student conducting the exercise!